7935216640 has 176 divisors, whose sum is σ = 21211505280. Its totient is φ = 2828206080.

The previous prime is 7935216607. The next prime is 7935216643. The reversal of 7935216640 is 466125397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7935216643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1928185 + ... + 1932295.

Almost surely, 2^7935216640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7935216640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10605752640).

7935216640 is an abundant number, since it is smaller than the sum of its proper divisors (13276288640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7935216640 is a wasteful number, since it uses less digits than its factorization.

7935216640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4178 (or 4160 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 7935216640 is about 89079.8329589812. The cubic root of 7935216640 is about 1994.5867482382.

The spelling of 7935216640 in words is "seven billion, nine hundred thirty-five million, two hundred sixteen thousand, six hundred forty".